MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Synthesis and Characterization of Mesoporous SiO2–CaO–P2O5 Bioactive Glass by Sol–Gel Process
Wei-Hua LuKun-Dar LiCheng-Hsueh LuLay Gaik TeohWei Hao WuYa Chi Shen
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JOURNALS FREE ACCESS Advance online publication

Article ID: M2012417

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Abstract

Ordered mesoporous SiO2–CaO–P2O5 bioactive glass with a highly specific surface area has been synthesized through a sol–gel process in the presence of a nonionic triblock copolymer acting as a template. The amorphous silicate can be detected on the mesoporous SiO2–CaO–P2O5 bioactive glass. The mesoporous SiO2–CaO–P2O5 bioactive glass exhibits the type IV isotherm curve with average pore size of 5.3 nm and high specific surface area of 317.24 m2/g for calcination at 600°C. Owing to the high specific surface area and pore volume, the mesoporous SiO2–CaO–P2O5 had a significantly enhanced bone-forming bioactivity compared with the conventional bioactive glass. After soaking the mesoporous SiO2–CaO–P2O5 in simulated body fluid (SBF) for 10 h, it can be observed that the formation of apatite nanocrystals occurs on the surface of the bioactive glass. It is anticipated that mesoporous SiO2–CaO–P2O5 with a controlled mesostructure may be potentially useful as novel tissue-engineering scaffolds in bone regeneration.

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© 2013 The Japan Institute of Metals and Materials
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